China Three Gorges Corporation

China Three Gorges Renewables (group) Co., Ltd.

Nanjing Haohui Hi Tech Co., Ltd.

China Petroleum & Chemical Corporation

Sinopec (beijing) Research Institute of Chemical Industry Co., Ltd.

China Three Gorges Renewablesco., Ltd.

Yajing Li

JianPing Wu

Xin Xiang

Jianping Liu

Yawei Zhu

Hong Wu

Jingxin Zhao

Jianhua Wu

Jianping Wu

Hongwei Min

Ruiqi Zhang

Zhiyu Sun

Wenwei Li

Xi Liu

Jinbiao Yang

Zhuo Yi

Liang Fang

Lunyu Zhu

Zhao Fang

Xiaona Hu

The disclosure discloses a numerical simulation method of an influence of a polytetrafluoroethylene (PTFE)-based membrane on an aerodynamic characteristic of a wind turbine blade, and relates to the technical field of polymer composites. The simulation method comprises the following steps: selecting a wind turbine generator, a blade airfoil and a PTFE-based nano functional membrane; setting a numerical simulation computation network and a computation area of a wind energy capture area; determining main computation parameters and a Reynolds number for aerodynamic characteristic computation; establishing a geometrical model whose airfoil boundary extends by 0.26 mm (membrane thickness) along a normal direction to obtain a new computational geometry; computing by using a hydrodynamic computation method and a finite volume method; and obtaining an influence number simulation computation result.

Numerical simulation method of influence of PTFE-based membrane on aerodynamic characteristic of wind turbine blade

The present disclosure relates to the field of oilfield plugging agents, and in particular to a plugging agent for oil extraction in an oilfield and a preparation method therefor and an application thereof.

Plugging agent for oil extraction in oilfield and a preparation method therefor and application thereof

A high-temperature high-linear-pressure micro-eutectic method for enhancing a strength of a polytetrafluoroethylene (PTFE)-based membrane is disclosed. The method comprises the following steps: pushing a PTFE-based nano functional composite membrane forwards at a speed of 6-8 m/min in a high-temperature high-linear-pressure micro-eutectic cavity with a length of 1.5 m at a temperature of 380° C., controlling a linear pressure of a surface of the PTFE-based membrane to be 50-80 N/m, and under a coiling traction of a membrane coiling roller outside the cavity, enabling membrane molecular chains to shrink and generate eutectic phases, wherein multiple micro-eutectic molecular structures are arranged in parallel, and the PTFE-based nano functional composite membrane has a density of 2.1 kg/mand has nanoscale macromolecular aggregates and a nano-scale and micron-scale concave-convex geometrical ultra-micro-structure morphology with a surface average size of 10-20 μm, a height of 5-10 μm and a spacing of 10-20 km.

High-temperature high-linear-pressure micro-eutectic method for enhancing strength of polytetrafluoroethylene (PTFE)-based membrane

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Beijing, China

Yajing Li